From: Limeng <[email protected]> If disable a clock when it is already in disable status, there will be a warning trace generated. So, it is need to confirm whether what status the clock is in before disable it.
Signed-off-by: Meng Li <[email protected]> --- drivers/net/can/rcar/rcar_can.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c index 48575900adb7..e340e32cd145 100644 --- a/drivers/net/can/rcar/rcar_can.c +++ b/drivers/net/can/rcar/rcar_can.c @@ -15,6 +15,7 @@ #include <linux/can/led.h> #include <linux/can/dev.h> #include <linux/clk.h> +#include <linux/clk-provider.h> #include <linux/of.h> #define RCAR_CAN_DRV_NAME "rcar_can" @@ -857,7 +858,9 @@ static int __maybe_unused rcar_can_suspend(struct device *dev) writew(ctlr, &priv->regs->ctlr); priv->can.state = CAN_STATE_SLEEPING; - clk_disable(priv->clk); + if(__clk_is_enabled(priv->clk)) + clk_disable(priv->clk); + return 0; } -- 2.17.1
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#8454): https://lists.yoctoproject.org/g/linux-yocto/message/8454 Mute This Topic: https://lists.yoctoproject.org/mt/71857962/21656 Group Owner: [email protected] Unsubscribe: https://lists.yoctoproject.org/g/linux-yocto/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
